EP0429405A1 - Jambe de suspension du type McPherson pour véhicules automobiles - Google Patents

Jambe de suspension du type McPherson pour véhicules automobiles Download PDF

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Publication number
EP0429405A1
EP0429405A1 EP90830495A EP90830495A EP0429405A1 EP 0429405 A1 EP0429405 A1 EP 0429405A1 EP 90830495 A EP90830495 A EP 90830495A EP 90830495 A EP90830495 A EP 90830495A EP 0429405 A1 EP0429405 A1 EP 0429405A1
Authority
EP
European Patent Office
Prior art keywords
rod
suspension unit
absorber
shock
annular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90830495A
Other languages
German (de)
English (en)
Other versions
EP0429405B1 (fr
Inventor
Raffaele Evangelisti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fiat Auto SpA
Original Assignee
Fiat Auto SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fiat Auto SpA filed Critical Fiat Auto SpA
Publication of EP0429405A1 publication Critical patent/EP0429405A1/fr
Application granted granted Critical
Publication of EP0429405B1 publication Critical patent/EP0429405B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
    • B60G15/068—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit specially adapted for MacPherson strut-type suspension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B60G2202/312—The spring being a wound spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/124—Mounting of coil springs
    • B60G2204/1242—Mounting of coil springs on a damper, e.g. MacPerson strut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/418—Bearings, e.g. ball or roller bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/43—Fittings, brackets or knuckles
    • B60G2204/4304—Bracket for lower cylinder mount of McPherson strut

Definitions

  • the present invention relates in general to McPherson-strut suspension units for motor vehicles, of the type comprising a telescopic shock-absorber including a tube carrying a wheel mounting at its lower end, a rod slidable through the upper end of the tube, a helical compression spring surrounding the shock-absorber, and a resilient connection for connecting the free end of the rod to the body.
  • Suspension units of this type have a problem in that the transverse components of the forces transmitted from the wheel in use tend to cause the shock-absorber, and particularly its rod, to be deformed by bending since its connection to the body is conventionally formed in such a way that the point at which the transverse forces are applied coincides with the region of its free end.
  • the bending of the rod makes it difficult for it to slide and causes it to jam in the tube.
  • connection for fixing the rod to the body includes a member substantially in the form of an inverted cup fixed at its upper end to the free end of the rod and at its lower end to an annular block of elastomeric material connected to the body.
  • the block is situated at the level of the body and the cup-shaped member, together with the portion of the rod surrounded thereby, therefore extends above the region where the shock-absorber is connected to the body.
  • This projection obviously involves greater transverse bulk of the suspension unit and consequent difficulties in adapting the bodywork of the vehicle to enable its installation.
  • the object of the present invention is to avoid the aforesaid disadvantages and to provide a suspension unit of the type defined above which reduces the adverse effect of transverse loads applied to the rod without the need for the shock-absorber to project above the region where the suspension unit is connected to the body of the vehicle.
  • the resilient connection of the rod to the body also includes a hollow body which surrounds the cup-shaped member and the lower end of which is joined thereto by means of the annular block of elastomeric material, the upper end of the hollow body carrying a member for fixing the connection to the body at a level which corresponds substantially to that of the free end of the shock-absorber rod.
  • the invention has the advantage that it can be applied to conventional McPherson-type suspension units without the need for structural modifications of the shock-absorber or of the body to which it is fitted.
  • the block of elastomeric material is preferably arranged around substantially the upper end of the tube.
  • the "static installed condition” obviously means the axial configuration assumed by the shock-absorber under the load of the suspended mass of the vehicle to which the suspension unit is fitted; since the tube moves up the rod under dynamic conditions, the arrangement according to the invention considerably reduces the length of the rod which is free to bend in operation.
  • the fixing member of the connection incorporates an axial rolling bearing and, beneath the latter, also defines an annular bearing plate for the upper end of the helical spring.
  • a resilient stroke-limiting buffer which surrounds the tube with clearance is conveniently fixed to the hollow body of the connection beneath the block of elastomeric material and cooperates with an annular plate which is fixed to the tube and against which the lower end of the helical spring bears.
  • a McPherson-type suspension unit for motor vehicles is generally indicated 1 and supports the structure or body S of the vehicle on a wheel R which, in the example, is a front steering wheel.
  • the suspension unit 1 comprises a conventional shock-absorber 2 with a tube 3 which carries a wheel mounting 4 at its lower end and has a rod 6 projecting from its upper end, indicated 5.
  • the rod 6 is guided for axial sliding by means of a bush, not shown, inserted in the upper end region 5 of the tube 3 in known manner.
  • the free end of the rod 6, indicated 7, is articulated to the body S of the vehicle by means of a resilient connection, generally indicated 8.
  • connection 8 includes an inverted cup-shaped member 9, the free end 7 of the rod 6 passing through the transverse wall 10 thereof and being fixed thereto by means of a nut 11.
  • the axial dimension of the side wall of the cup-shaped member 10 is such that, when the suspension unit 1 is in the static installed configuration shown in the drawing, its lower end surrounds the upper end 5 of the tube 3.
  • This lower end, indicated 12, is convex and is fixed to the internal surface of an annular block 13 of the elastomeric material whose external surface is fixed in turn to a hollow body, generally indicated 14, which surrounds the cup-shaped element 9.
  • the hollow body 14 has a lower portion 15 which is convex like the lower end 12 of the cup-shaped element 9 and constitutes the element for joining to the elastomeric block 13, and an upper portion 16 whose axis B is inclined to the axis A of the shock-absorber 2.
  • the upper portion 16 includes a fixing member 17 of varying thickness, an annular bearing plate 18 fixed to the lower portion 15, and an axial rolling bearing 19 whose outer and inner races are carried by the fixing member 17 and the plate 18 respectively.
  • the fixing member 17 is connected to the body S by means of screws 20: as can clearly be seen in the drawing, it bears against the body S from below and the arrangement is such that the free end 7 of the rod 6 is situated at a level which corresponds substantially to that of the region of the body S in which the screws 20 are fitted.
  • the vertical bulk of the shock-absorber 2 is thus kept within that of the said region of the body S.
  • the lower end of the spring 22 reacts against a plate 23 fixed at 24 to the sleeve 3 and arranged parallel to the plate 18.
  • the configuration of the suspension unit 1 shown in broken outline in the drawing corresponds to the telescoped condition (that is, the most contracted condition) of the shock-absorber 2 and the spring 22: in this condition, the plate 24 cooperates with a resilient stroke-limiting buffer 25 which surrounds the upper region of the tube 3 with clearance and is fixed at the top to an annular base wall 26 of the hollow body 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Seats For Vehicles (AREA)
EP90830495A 1989-11-14 1990-10-30 Jambe de suspension du type McPherson pour véhicules automobiles Expired - Lifetime EP0429405B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT06800189A IT1237604B (it) 1989-11-14 1989-11-14 Sospensione del tipo mc pherson per autoveicoli.
IT6800189 1989-11-14

Publications (2)

Publication Number Publication Date
EP0429405A1 true EP0429405A1 (fr) 1991-05-29
EP0429405B1 EP0429405B1 (fr) 1994-03-30

Family

ID=11307093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90830495A Expired - Lifetime EP0429405B1 (fr) 1989-11-14 1990-10-30 Jambe de suspension du type McPherson pour véhicules automobiles

Country Status (6)

Country Link
US (1) US5074579A (fr)
EP (1) EP0429405B1 (fr)
BR (1) BR9005833A (fr)
DE (1) DE69007752T2 (fr)
ES (1) ES2051001T3 (fr)
IT (1) IT1237604B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2811615A1 (fr) * 2000-07-17 2002-01-18 Peugeot Citroen Automobiles Sa Dispositif de limitation de course pour amortisseur de vehicule automobile, et procede de fabrication d'un tel dispositif
WO2002006699A1 (fr) * 2000-07-17 2002-01-24 Peugeot Citroen Automobiles S.A. Dispositif de limitation de course pour amortisseur de vehicule automobile, et procede de fabrication d'un tel dispositif
DE10359638B3 (de) * 2003-09-04 2005-04-21 Zf Friedrichshafen Ag Lagerung für einen Schwingungsdämpfer

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237541A (en) * 1989-11-04 1991-05-08 Ford Motor Co A mcpherson strut suspension arrangement
US5467971A (en) * 1994-08-08 1995-11-21 General Motors Corporation Strut assembly with integral bearing and spring seat
US5454585A (en) * 1994-08-08 1995-10-03 General Motors Corporation Strut assembly with bearing axis alignment
US5772168A (en) * 1994-11-28 1998-06-30 Unisia Jecs Corporation Mounting bracket for pressurized fluid buffer device
US5678810A (en) * 1995-10-30 1997-10-21 General Motors Corporation Pneumatic suspension system
JPH1159155A (ja) * 1997-08-08 1999-03-02 Chuo Spring Co Ltd 圧縮コイルばね外挿ショックアブソーバ
US6079700A (en) * 1998-10-09 2000-06-27 Chrysler Corporation Vehicle shock absorber spring seat pad having a spring--containment peripheral flange
US6401883B1 (en) 1999-09-22 2002-06-11 Mts Systems Corporation Vehicle suspension strut having a continuous position sensor
US7690662B2 (en) * 2003-06-18 2010-04-06 Mitsubishi Steel Mfg. Co., Ltd. Strut-type suspension device
FR2859513B1 (fr) * 2003-09-04 2006-07-21 Zahnradfabrik Friedrichshafen Support pour un amortisseur d'oscillations
US20060272911A1 (en) * 2005-06-02 2006-12-07 Freudenberg-Nok General Partnership Jounce bumper, rate cup, and strut mount bottom plate
JP4890013B2 (ja) * 2005-12-01 2012-03-07 トヨタ自動車株式会社 ストラット式サスペンション
CA2780105C (fr) * 2006-01-24 2013-09-24 Soucy International Inc. Dispositif anticouple pour un ensemble de traction

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2301399A1 (fr) * 1975-02-19 1976-09-17 Gen Motors Corp Suspension de roue independante pour vehicule automobile
DE2626392A1 (de) * 1975-02-19 1977-12-15 Opel Adam Ag Unabhaengige radaufhaengung fuer kraftfahrzeuge
DE2820585A1 (de) * 1978-05-11 1979-11-15 Opel Adam Ag Unabhaengige aufhaengung der gelenkten vorderraeder von kraftfahrzeugen
US4274655A (en) * 1979-10-29 1981-06-23 General Motors Corporation Resilient mount for MacPherson strut
EP0226832A1 (fr) * 1985-12-20 1987-07-01 FIAT AUTO S.p.A. Suspension pour roues de véhicule à moteur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE957905C (de) * 1951-04-27 1957-01-17 Adam Opel Aktiengesellschaft, Rüsselsheim/M Aufhängung der Vorderräder von Kraftfahrzeugen
GB1209746A (en) * 1966-12-15 1970-10-21 Girling Ltd Improvements in or relating to vehicle suspensions
JPS5754409Y2 (fr) * 1978-03-23 1982-11-25
FR2427515A1 (fr) * 1978-05-29 1979-12-28 Peugeot Dispositif protecteur, notamment pour tige d'amortisseur telescopique
JPH0522663Y2 (fr) * 1985-06-11 1993-06-10
US4721325A (en) * 1986-11-19 1988-01-26 General Motors Corporation Suspension strut with quick take-apart upper mount
US4747587A (en) * 1987-01-15 1988-05-31 Chrysler Motors Corporation Low profile suspension strut

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2301399A1 (fr) * 1975-02-19 1976-09-17 Gen Motors Corp Suspension de roue independante pour vehicule automobile
DE2626392A1 (de) * 1975-02-19 1977-12-15 Opel Adam Ag Unabhaengige radaufhaengung fuer kraftfahrzeuge
DE2820585A1 (de) * 1978-05-11 1979-11-15 Opel Adam Ag Unabhaengige aufhaengung der gelenkten vorderraeder von kraftfahrzeugen
US4274655A (en) * 1979-10-29 1981-06-23 General Motors Corporation Resilient mount for MacPherson strut
EP0226832A1 (fr) * 1985-12-20 1987-07-01 FIAT AUTO S.p.A. Suspension pour roues de véhicule à moteur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2811615A1 (fr) * 2000-07-17 2002-01-18 Peugeot Citroen Automobiles Sa Dispositif de limitation de course pour amortisseur de vehicule automobile, et procede de fabrication d'un tel dispositif
WO2002006699A1 (fr) * 2000-07-17 2002-01-24 Peugeot Citroen Automobiles S.A. Dispositif de limitation de course pour amortisseur de vehicule automobile, et procede de fabrication d'un tel dispositif
US6913253B2 (en) 2000-07-17 2005-07-05 Peugeot Citroen Automobiles S.A. Travel limit stop device for a motor vehicle damper, and method for making same
DE10359638B3 (de) * 2003-09-04 2005-04-21 Zf Friedrichshafen Ag Lagerung für einen Schwingungsdämpfer

Also Published As

Publication number Publication date
ES2051001T3 (es) 1994-06-01
IT8968001A1 (it) 1991-05-14
BR9005833A (pt) 1991-09-24
DE69007752T2 (de) 1994-07-28
EP0429405B1 (fr) 1994-03-30
IT8968001A0 (it) 1989-11-14
DE69007752D1 (de) 1994-05-05
IT1237604B (it) 1993-06-08
US5074579A (en) 1991-12-24

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